Quick answers
- Is CVE-2026-51605 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-51605 being exploited in the wild.
- How severe is CVE-2026-51605?
- Informational severity, published 9 July 2026.
- Which products and versions are affected?
- Tenda CP3 V31.1.9.991.
- Is there a fix for CVE-2026-51605?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-51605 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-51605?
- Check whether you run Tenda CP3 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stack-based buffer overflow exists in the RTSP service of the Tenda CP3 IP camera due to insufficient length validation during URL routing and path extraction. The service utilizes a two-stage validation process for TEARDOWN requests; while the first stage checks format, the second stage fails to validate the length of the URL field during parsing. An unauthenticated attacker can trigger the overflow by establishing a valid RTSP session (completing OPTIONS, DESCRIBE, SETUP, and PLAY sequences) and then sending a TEARDOWN request containing five consecutive repetitions of a valid RTSP URL. This bypasses initial checks and overflows the stack buffer during route parsing, leading to a process crash and the closure of TCP port 554.
Affected products
- Tenda CP3 V3.0 V31.1.9.991
Timeline
- 2026-07-09: disclosed: CVE-2026-51605 published